Merge pull request #46927 from izeye

* pr/46927:
  Adapt checkstyle rules for 3.4.x
  Remove redundant suppressions from Checkstyle configuration

Closes gh-46927

Author: snicoll

src/checkstyle/checkstyle-suppressions.xml

@@ -19,13 +19,9 @@
 	<suppress files="SignalUtils\.java" checks="IllegalImport" />
 	<suppress files="OrderedFilter\.java" checks="InterfaceIsType" />
 	<suppress files="OrderedWebFilter\.java" checks="InterfaceIsType" />
-	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]cli[\\/]command[\\/]" checks="ImportControl" />
 	<suppress files="[\\/]src[\\/]main[\\/]java[\\/]sample[\\/]" checks="ImportControl" />
-	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]sample[\\/]" checks="ImportControl" />
 	<suppress files="[\\/]src[\\/]test(Fixtures)?[\\/]java[\\/]" checks="Javadoc*" />
 	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]" id="mainCodeIllegalImportCheck" />
-	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]" checks="NonEmptyAtclauseDescription" />
-	<suppress files="[\\/]autoconfigure[\\/].*Properties\.java" checks="JavadocType" />
 	<suppress files="[\\/]autoconfigure[\\/].*Properties\.java" checks="JavadocVariable" />
 	<suppress files="[\\/]spring-boot-docs[\\/]" checks="JavadocPackage|JavadocType|JavadocVariable|SpringDeprecatedCheck" />
 	<suppress files="[\\/]spring-boot-docs[\\/]" checks="SpringJavadoc" message="\@since" />
@@ -36,7 +32,6 @@
 	<suppress files="[\\/]spring-boot-smoke-tests[\\/].*SamplePulsarApplicationTests" checks="SpringHideUtilityClassConstructor" />
 	<suppress files="[\\/]spring-boot-smoke-tests[\\/]" id="mainCodeIllegalImportCheck" />
 	<suppress files="[\\/]spring-boot-deployment-tests[\\/]" checks="JavadocPackage|JavadocType" />
-	<suppress files="[\\/]spring-boot-integration-tests[\\/]" checks="JavadocType" />
 	<suppress files="Ansi.*\.java" checks="JavadocVariable" />
 	<suppress files="Ansi.*\.java" checks="JavadocStyle" />
 	<suppress files="LogLevel\.java" checks="JavadocVariable" />
@@ -50,7 +45,6 @@
 	<suppress files="LogbackMetricsAutoConfiguration\.java" checks="IllegalImport" />
 	<suppress files="RemoteUrlPropertyExtractorTests\.java" checks="IllegalImport" />
 	<suppress files="SampleLogbackApplication\.java" checks="IllegalImport" />
-	<suppress files="FlywayAutoConfigurationTests\.java" checks="IllegalImport" />
 	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]org[\\/]springframework[\\/]boot[\\/]test[\\/]rule[\\/]" checks="SpringJUnit5" />
 	<suppress files="MockBeanWithSpringMethodRuleRepeatJUnit4IntegrationTests" checks="SpringJUnit5" />
 	<suppress files="OutputCaptureRuleTests" checks="SpringJUnit5" />
@@ -66,21 +60,15 @@
 	<suppress files="[\\/]src[\\/]intTest[\\/]java[\\/]" checks="SpringJavadoc" message="\@since" />
 	<suppress files="[\\/]src[\\/]systemTest[\\/]java[\\/]" checks="JavadocPackage" />
 	<suppress files="[\\/]src[\\/]systemTest[\\/]java[\\/]" checks="SpringJavadoc" message="\@since" />
-	<suppress files="LinuxDomainSocket" checks="FinalClass" message="SockaddrUn" />
-	<suppress files="BsdDomainSocket" checks="FinalClass" message="SockaddrUn" />
-	<suppress files="StringSequence" checks="SpringMethodVisibility" message="isEmpty"/>
 	<suppress files="ValidatorPropertiesWithDefaultValues\.java" checks="SpringMethodVisibility" />
 	<suppress files="DevToolsTestApplication\.java" checks="SpringMethodVisibility" />
 	<suppress files="DevToolsR2dbcAutoConfigurationTests" checks="HideUtilityClassConstructor" />
-	<suppress files="ConfigurationMetadataChangelogGenerator" checks="SpringMethodVisibility" />
 	<suppress files="AbstractLaunchScriptIntegrationTests" checks="IllegalImport" />
 	<suppress files="FailureAnalyzers\.java" checks="RedundantModifier" />
 	<suppress files="SpringBootVersion" checks="JavadocPackage" />
 	<suppress files="spring-boot-configuration-processor[\\/]src[\\/]test[\\/]java[\\/]org[\\/]springframework[\\/]boot[\\/]configurationsample[\\/]" checks="SpringDeprecatedCheck"/>
 	<suppress files="ImportTestcontainersTests\.java" checks="InterfaceIsType" />
 	<suppress files="MyContainers\.java" checks="InterfaceIsType" />
-	<suppress files="MyInterface\.java" checks="InterfaceIsType" />
-	<suppress files="SpringBootBanner\.java" checks="SpringLeadingWhitespace" />
 	<suppress files="LoadTimeWeaverAwareConsumerContainers\.java" checks="InterfaceIsType" />
 	<suppress files="FieldValues\.java" checks="SimplifyBooleanExpression" />
 </suppressions>